Initialize backLayer.

The zeropage variable backLayer was uninitialized. The program only happened to work if $0090 happened to be $00 (or $01 ?) on startup.
2020-01-11 14:55:13 +01:00 · 2020-01-11 14:55:13 +01:00 · 8274d0252b
parent d785b58c26
commit 8274d0252b
1 changed files with 2 additions and 0 deletions
--- a/src/apple2/penetrator.asm
+++ b/src/apple2/penetrator.asm
@ -72,6 +72,8 @@ store:
    dex 
    bpl :-

+    sta backLayer                               ; set back layer to 0
+
    ldx #((BitMasksEnd - BitMasks) - 1)
 :
    lda BitMasks, x